Amy, like quite a few characters, is not one for backstory. We know very little. Some would say that's for the best, but there are a good number of others who disagree. So, I think it would be quite fitting to express that desire for more here. Whether you'd rather someone else take the reigns, or you have your own path you wish Amy to follow, feel free to express it here.

I'm good at coming up with back stories for characters, such as Sonic himself:

Amy was born 100 years ago, and then she was turned into a sparkly vampire! Sonic is the only one who knows her secret, therefore avoiding her at all costs. If she was not a vampire, he would love her, but since she is a sparkly vampire fairy, Sonic hates her and does not want to marry her, for he would be related to the Cullens.